The Indonesian navy has recovered the voice recorder from the Sriwijaya Air jet’s cockpit that crashed into the Java Sea shortly after takeoff in January. None of the 62 people on board survived.

Divers found the casing and beacon of the CVR three days after the crash, but they could not locate the memory unit. Now that it has been found, if undamaged, it could show what the pilots were doing to regain control of the aircraft.

According to Reuters, the site where they found the recorder was reportedly very muddy with a strong current. It will take up to a week for the investigators to listen to the recording contained on the memory unit.

Soerjanto Tjahjono of the Indonesia National Transportation Safety Committee commented: “We will take CVR to lab for reading, about three days to one week. After that we’ll transcribe and match it to FDR. Without a CVR, in the Sriwijaya 182 case it would be very difficult to determine the cause.”